The big connector bracelet is made from oxidized sterling silver. The lock is not included. This Big Connector Bracelet can only be combined with the Small Lock. We like to mix metals and add a Lettre D’amour pendant to make it even more personal. Endless possibilities. To determine your size measure the circumference of your wrist. If your wrist is 16cm, go for a 14cm connector bracelet with the Small Lock. 6mm thick. Sterling Silver.